The McMillan Mtn Tracker LR is a fantastic stock. The ergos are lil different with the negative comb and near flat toe line but they shoot amazing.
Trying to go light as possible, the bastion is a solid choice. Manners with a mini chassis, the few I've had did benefit from a skim bedding. One the mini chassis was crooked to the barrel channel, so it was sent back. I would go McMillan over Manners and I've had several of both.
If it's strictly a hunting rig for a manners, I prefer the pro hunter without mini chassis and doing a pillar bed is going to be the lightest most multi purpose config. I'd still take a Mtn tracker LR over all them.
UM rokstok, ugly as F, very very shootable, tracks just a lil better than the Mtn tracker lr due to the 0° toe line, but availability is poor and fit and finish are not always as they should be as they're made by stockys. They're much more affordable tho.